Regenerative furnace.



N0. 650,9l8. Patented .IunB 5, I900.

W. SWINDELL.

BEGENERATIVE FURNACE.

(Application filed Sept. 25, 1899.) (No Model.) 2 Sheets-Sheet l.

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I W. SWIND ELL.

BEGENERATIVE FURNACE. (Application filed Sept. 25, 1899.)

(No Model.) 2 Sheets-Sheet z.

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NITED STATES 5 ATENT FFICE.

WILLIAM SWINDELL, OF ALLEGHENY, PENNSYLVANIA.

, REGENERATIVE FURNACE.

SPECIFICATION forming part of Letters Patent No. 650,918, d'atd J'une 5, 1900.

Application filed'septemher 25,1899. erial No. 731,663. (No model.) i

To all whom it may concern:

Be it known that I,WILLIAM SWINDELL, of Allegheny, in the county of Allegheny and State of Pennsylvania, have invented a certain newand useful Improvement in Regenerative Furnaces, of which improvement the following is a specification.

The object of my invention is to provide effective and desirable means which shall be readily and inexpensively applicable in connection with regenerative furnaces of the general character of those employed in present standard practice, whereby the flow of the waste products escaping to the stack may be so regulated as to substantially equalize the passage of the Waste products through the air and the gas regenerator chambers, respectively, and prevent the destructive action of excessive heat of said products upon the gas-ports of the furnace and the metal reversing-valves.

The improvement claimed is hereinafter fully set forth.

In the accompanying drawings, Figure 1 is a vertical longitudinal section on the lines a a of Figs. 2 and 3 through the combustion and regenerator chambers of a regenerative furnace embodying my invention; Fig. 2, a vertical transverse section on the line b b b b of Fig. 4; Fig. 3, a horizontal section on the line 0 c of Fig. 1; Fig. 4, ahorizontal section, the left-hand half of which is taken on the line cl d of Fig. 5 and the right-hand half on the line e 6 thereof; and Fig. 5, a vertical section on the line ff of Fig. 4. 1

My invention is herein shown as applied in connection with a regenerative gas-furnace having a working or combustion chamber 1 of the ordinary form, below each end of which are built an air-regenerator chamber 2 and a gas-regenerator chamber 3, these chambers containing the usual check Work or firebrick filling. Each of the gas-regenerator chambers 3 communicates with the adjacent end of the combustion-chamber through gasfines 4, which open into the combustion-chamber near its top by gas-ports 5. The air-regenerator chambers 2 communicate with the combustion chamber through air flues 6, which open into the combustion-chamber by air-ports 7 above the gas-ports 5. The combustion-chamber 1 is provided with a suitable generator chambers 3 communicate bylower fiues 13 with fiues 13, leading into the easing '16 of a gas-reversing valve 16 on opposite sides of said valve. A gas-supply pipe 17 controlled by a gas-supply valve 17, leads into the upper portion of the valve-casing 16, and the lower portion of the valve-casing communicates with the stack-flue 11. When the air and gas supply valves are opened and the reversing-valves 14 and 16 are turned into the position shown in Fig. 50f the drawing, air and gas will be admitted to the regenerator-chambers at the right-hand end of the combustion-chamber 1 and the regenerator-chambers at the left-hand end will be put in communication with the stack-flue 11. By moving the reversing-valves into opposite positions the relation of the end sets of regenerator-chambers to the supply and discharge passages will be relatively reversed, the construction and operation of the furnace as thus far described being substantially as in ordinary practice.

Much difi'iculty has been experienced in furnaces of the ordinary constructions by reason of the unequal passage of the highly-heated waste products of combustion through the gas and the air regenerator chambers, respectively, there being frequently so great an excess of heat in the gas ports and flues as to burn away the walls of the gas-ports and to rapidly destroy the metal-reversing valves. To overcome this objection, I provide means for checking the discharge of the heated products before they reach the reversing-valves, thereby both equalizing their passage through the gas and the air regenerator chambers and protecting the reversing-valves from the action of excessive heat. To this end a regulating-valve or damper 18 is fitted in each of the lines 12, which connect the air-regenerator chambers 2 with the casing of the air-reversing valve let, and a regulating-valve or damper 19 is fitted in each of the fines 13, which connect the gas-regenerator chambers 3 with the casing of the gas-reversing valve 16. The valves 18 are connected by a chain or other suitable flexible connection 20, passing around pulleys 21, and are simultaneously actuated in opposite directions by a pivoted lever 22', connected to the chain 20 by a rod or link 23, so that the opening traverse of one valve will be effected coincidently with and proportionately to the closing traverse of the other. The valves 19 of the gas-regeneratorchamber passages are connected by similar means, which are not shown, and are similarly operated. The air-reversing valve 14 is operated by a pivoted lever 2% and connecting-link 25, and similar means are provided for operating the gas-reversin g valve 16. The air-supply valve 15 is opened by a screw 26, to which the valve is connected by a chain 27, passing around a pulley 28, and is closed by gravity, and the gas-valve 17 may be operated in the same or in any other well-known manner. The members of each pair of regulating-valves 18 18 and 19 19 are set relatively, so that when the valves which are on the supply sides of the reversing-valves 11 and 16 are fully open those which are on the opposite sides of the reversing-valves-that is to say, which are in the line of the discharge of the waste products to the stack-fine 11 are partially closed, thereby correspondingly checking or retarding the access of the waste products to the reversing-valves and their discharge to the stack-flue. The members of the pairs of regulating-valves are alternately moved into full-open and partially-closed positions, respectively, coincidently with the changes of position of the reversing-valves, and the valves of the gas and air flues may be so relatively adjusted as to impose a greater retardation of the passage of the waste products through either the gas or the air regenerator chamber of the then discharging end of the combustion-chamber, accordingly as the desired equalization of the passage of the waste products through said regenorator-chambers may require.

I claim as my invention and desire to secure by Letters Patent- In a regenerative furnace, the combination of a combustion-chamber, air and gas regenerator chambers communicating with opposite ends thereof, pairs of dues leading from the air-regenerator chambers and the gas-regenerator chambers, respectively, to the easings of independent reversing-valves, an airsupply pipe and a gas-supply pipe, leading, respectively, into one and the other of said casings, a stack-flue leading outwardly from both of said casings, valves or dampers, each controlling one of the regenerator-chamber flues,intermediate connections through which the valves of each pair of flues are movable in opposite directions respectively, and means for independently operating each of said intermediate connections.

WILLIAM SWINDELL.

Witnesses:

J. SNOWDEN BELL, CLARENCE A. WILLIAMS. 

